Translator Disclaimer
Paper
9 July 2003 Abnormal propagation and interface refraction of light in a photonic crystal and their applications
Author Affiliations +
Proceedings Volume 5000, Photonic Crystal Materials and Devices; (2003) https://doi.org/10.1117/12.479511
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States
Abstract
We analyze the abnormal refraction and propagation when a light beam of finite and practical width enters a photonic crystal from a uniform medium. The beam propagation in the photonic crystal is very complex, and in many cases, is beyond the realm of refraction (even with a renormalized refractive index given by photonic band calculation). Generally, light propagation is restricted to a triangular region (or a fan), although the light may not fill the whole triangle, nor is the light intensity uniform in the triangle. It is found beam divergence does not have a definite connection with the fan shape of the region of light propagation, in contrast to dynamic X-ray theory. A new origin of the fan shape is suggested. Also simulations indicate that at microscale, a narrow light beam may zigzag in a photonic crystal with sufficiently high index contrast. An application of this phenomenon is to make a wide angle bend for waveguides. The designed bending structure has low loss and matches the mode size of a typical single-mode waveguide for fiber-optic communications. Our simulations are based on two-dimensional photonic crystals.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wei Jiang, Chuhua Tian, Linghui Wu, Yihong Chen, and Ray T. Chen "Abnormal propagation and interface refraction of light in a photonic crystal and their applications", Proc. SPIE 5000, Photonic Crystal Materials and Devices, (9 July 2003); https://doi.org/10.1117/12.479511
PROCEEDINGS
6 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Optical lattices as nonlinear photonic crystals
Proceedings of SPIE (March 13 2007)
Study of beam propagation in finite photonic crystals
Proceedings of SPIE (February 25 2010)
Nonlinear properties of the omniguide fiber
Proceedings of SPIE (April 13 2005)
Rotary solitons in elliptical photonic lattices
Proceedings of SPIE (August 21 2009)

Back to Top